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Programming in Emacs Lisp

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C. A Graph with Labelled Axes

Printed axes help you understand a graph. They convey scale. In an earlier chapter (see section Readying a Graph), we wrote the code to print the body of a graph. Here we write the code for printing and labelling vertical and horizontal axes, along with the body itself.

Labelled Example Graph  
C.1 The print-graph Varlist  let expression in print-graph.
C.2 The print-Y-axis Function  Print a label for the vertical axis.
C.3 The print-X-axis Function  Print a horizontal label.
C.4 Printing the Whole Graph  The function to print a complete graph.


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